<script>
  import useStore from "@/store/index.js"
  const {app} = useStore();
  
  export default {
    data() {
      return {
        text:"",
        goods_info:{},
        goods_id:Number,
        cartTotal:Number,
        options: [{
        			icon: 'shop',
        			text: '店铺',
        			info: 2,
        			infoBackgroundColor:'##ff0000',
        			infoColor:"#fff"
        		}, {
        			icon: 'cart',
        			text: '购物车',
        			info: 0
        		}],
        	    buttonGroup: [{
        	      text: '加入购物车',
        	      backgroundColor: '#ff0000',
        	      color: '#fff'
        	    },
        	    {
        	      text: '立即购买',
        	      backgroundColor: '#ffa200',
        	      color: '#fff'
        	    }
        	    ]
      };
    },
    onLoad(options) {
      this.goods_id = options.goods_id
      this.getGoodsInfo(this.goods_id)
      this.options[1].info = app.cartTotal
    },
    methods:{
      async getGoodsInfo(goods_id){
        const {data:res} = await uni.$http.get('/goods/detail',{goods_id})
        if(res.meta.status !== 200) return uni.$showMsg('未获取到数据')
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,'<img style="display:block;"').replace(/webp/g,'jpg')
        this.goods_info = res.message
      },
      // 实现轮播图的预览效果
      preview(i) {
        // 调用 uni.previewImage() 方法预览图片
        uni.previewImage({
          // 预览时，默认显示图片的索引
          current: i,
          // 所有图片 url 地址的数组
          urls: this.goods_info.pics.map(x => x.pics_big)
        })
      },
      onClick (e) {
        if(e.content.text === '购物车'){
          uni.switchTab({
            url:'/pages/cart/cart'
          })
        }
      },
      buttonClick (e) {
        if(e.content.text === "加入购物车"){
          const goods = {
             goods_id: this.goods_info.goods_id,       // 商品的Id
             goods_name: this.goods_info.goods_name,   // 商品的名称
             goods_price: this.goods_info.goods_price, // 商品的价格
             goods_count: 1,                           // 商品的数量
             goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
             goods_state: true                         // 商品的勾选状态
          }
          app.addToCart(goods)
          this.cartTotal = app.cartTotal
        }
      }
    },
    watch:{
      cartTotal(newValue){
        this.options[1].info = newValue
      }
    }
  }
</script>

<template>
  <view class="box">
    <swiper class="goods-swiper" :indicator-dots="true" :autoplay="true" :interval="3000" :circular="true" :duration="1000">
      <swiper-item class="swiper-item" v-for="(item,i) in goods_info.pics" :key="i">
        <img class="swiperImg" :src="item.pics_big" @click="preview(i)" alt="" />
      </swiper-item>
    </swiper>
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品名称 -->
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费  </view>
    </view>
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <view class="goods_nav">
      <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>  
</template>

<style lang="scss">
.box{
  padding-bottom: 100rpx;
}

.goods-swiper{
  height: 750rpx;
  .swiper-item{
    .swiperImg{
      width: 100%;
      height: 100%;
    }
  }
}
// 商品信息区域的样式
.goods-info-box {
  padding: 10px;
  padding-right: 0;

  .price {
    color: #c00000;
    font-size: 18px;
    margin: 10px 0;
  }

  .goods-info-body {
    display: flex;
    justify-content: space-between;

    .goods-name {
      font-size: 13px;
      padding-right: 10px;
    }
    // 收藏区域
    .favi {
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }

  // 运费
  .yf {
    margin: 10px 0;
    font-size: 12px;
    color: gray;
  }
}

.goods_nav{
  position: fixed;
  width: 100%;
  bottom: 0px;
  left: 0px;
}
</style>
